Personal Details To Be Sent To An Immigration Company Using G-Mail?

I have had an e mail from this immigration company after I requested some advice off them.
I was telling this company about my personal details DOB, marital status etc and after I made out this details I asked a friend to check through them.
When I told that person it was a g-mail addy he told me to watch what I put with it being a g mail addy as they use these details for their own benefit and sell the details to other companies.
What do people think?

Answer:
The US immigration service has a warning about scam companies on the Home Page of its web page. I'd just go directly to the government. The private company is getting something out of this somewhere, and why pay it?
I think that is a bunch of bull. Make sure you do not give your info to anyone. Becuase there are some real idiots. I would contact someone about this.
Don't give any info like that to people who have no business asking you for it.

The immigration information post by website user , MyTend.com not guarantee correctness

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